Population
39,875
2025
−5.9% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
St. John the Baptist Parish had an estimated 39,875 residents in 2025, down 5.9% (2,487 fewer people) since 2020. That is slower than Louisiana as a whole (−0.7%), and the 56th fastest growth of 64 counties in Louisiana.
Data as of 2025 · updated
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39,875
2025
−5.9% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
−110
2025
−2.8 per 1,000 residents
−3,166 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
5.2%
2025
−0.1 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
60
2025
−26.8% since 2021
1.5 per 1,000 residents
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
$66,630
2020–24
+20.2% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
15,023
2023
−11.1% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
Net domestic migration was negative in 2025: 110 more people moved out to other U.S. counties than moved in.
Private employers had 15,023 paid employees in mid-March 2023, −11.1% since 2018 (County Business Patterns).
Unemployment averaged 5.2% in 2025, 0.1 points lower than in 2019 (before the pandemic).
Builders were authorized to start 60 new homes in 2025, or 1.5 per 1,000 residents.
Median household income was $66,630 in the 2020–24 American Community Survey, +20.2% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 2,985th.
Part of the New Orleans-Metairie, LA metro area.
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| Year | Population | Change |
|---|---|---|
| 2025 | 39,875 | −90 |
| 2024 | 39,965 | +147 |
| 2023 | 39,818 | −210 |
| 2022 | 40,028 | −2,091 |
| 2021 | 42,119 | −243 |
| 2020 | 42,362 | – |
Census Bureau population estimates, July 1 of each year.
St. John the Baptist Parish lost 2,487 people since 2020; the biggest drag was domestic migration (−3,166).
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | −30 | +113 | |
| International migrationfrom and to other countries | +46 | +417 | |
| Domestic migrationfrom and to other U.S. counties | −110 | −3,166 | |
| Census adjustmentbalancing residual | +4 | +149 | |
| Total change | −90 | −2,487 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
| Measure | In Louisiana | Among U.S. counties |
|---|---|---|
| Population growth | 56th of 64 | 2,985th of 3,107 |
| Net domestic migration per 1,000 residents | 27th of 64 | 2,315th of 3,108 |
| Private-sector job growth | 59th of 64 | 2,855th of 3,092 |
| Median household income | 14th of 64 | 1,440th of 3,107 |
| Lowest unemployment rate | 51st of 64 | 2,616th of 3,108 |
| New homes permitted per 1,000 residents | 37th of 64 | 1,797th of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
The County Growth and Demographics Report for St. John the Baptist Parish, LA as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.
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Over 2020–25, St. John the Baptist Parish's population change (−5.9%) was behind 7 of its 8 neighbouring counties and level with St. James Parish.
4 of its 8 neighbouring counties had a higher median household income than St. John the Baptist Parish's $66,630 (2020–24).
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| St. John the Baptist Parish, LA This county | 39,875 | −5.9% | −2.8 | 1.5 | $66,630 |
| St. Charles Parish, LA | 50,586 | −3.7% | −3.8 | 2.3 | $80,897 |
| St. James Parish, LA | 18,938 | −5.9% | −7.8 | 3.4 | $65,531 |
| Ascension Parish, LA | 135,105 | +6.4% | 0.5 | 4.7 | $91,549 |
| Livingston Parish, LA | 155,036 | +8.5% | 7.8 | 4.2 | $80,122 |
| Jefferson Parish, LA | 431,398 | −1.9% | −12.9 | 1.0 | $65,252 |
| Tangipahoa Parish, LA | 141,346 | +5.8% | 6.9 | 8.2 | $56,760 |
| Lafourche Parish, LA | 95,505 | −2.0% | −1.7 | 3.6 | $63,135 |
| St. Tammany Parish, LA | 279,108 | +5.3% | 2.6 | 3.9 | $81,202 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
No. Its population fell 5.9% between 2020 and 2025, about 2,487 fewer people (Census Bureau population estimates). Louisiana as a whole changed −0.7% over the same years. That ranks 56th of 64 counties in Louisiana for population growth.
On net, none in 2025: about 110 more people moved out to other U.S. counties than moved in (Census Bureau net domestic migration estimate).
It averaged 5.2% in 2025 (BLS Local Area Unemployment Statistics, annual average).
About 39,875 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
Private employers there had 15,023 paid employees in mid-March 2023, −11.1% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Louisiana county pages carry the public federal growth figures.
Email me when St. John the Baptist Parish gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.